JP2012103598A5 - - Google Patents
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- JP2012103598A5 JP2012103598A5 JP2010253869A JP2010253869A JP2012103598A5 JP 2012103598 A5 JP2012103598 A5 JP 2012103598A5 JP 2010253869 A JP2010253869 A JP 2010253869A JP 2010253869 A JP2010253869 A JP 2010253869A JP 2012103598 A5 JP2012103598 A5 JP 2012103598A5
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- 239000007788 liquid Substances 0.000 claims description 143
- 238000011084 recovery Methods 0.000 claims description 13
- 230000014759 maintenance of location Effects 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 4
- 238000005259 measurement Methods 0.000 claims 4
- 238000001739 density measurement Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 238000000638 solvent extraction Methods 0.000 claims 1
Description
前述の課題を解決するために、本発明に係る画像形成装置および画像形成方法では、タンクでトナーとキャリアー液を含む液体現像剤の濃度が第１のトナー濃度に調整されるとともに液体現像剤の液量が調整される。印字動作時に、タンクの液体現像剤が現像部の液体現像剤貯留部に供給されて一定量貯留されるとともに液体現像剤貯留部から流出される。この液体現像剤貯留部に貯留された液体現像剤を用いて、現像部の現像剤担持体が潜像担持体に形成された潜像を現像して、潜像担持体に像が形成される。現像後に現像剤担持体に残留する液体現像剤は除去される。液体現像剤貯留部から流出した液体現像剤、および現像剤担持体から除去された液体現像剤を回収した回収液が回収液貯留部に貯留される。回収液貯留部に貯留された回収液は回収経路を通って移動してタンクに貯留される。このとき、回収液滞留検出部で回収経路に発生する回収液の滞留が検出される。この回収液の滞留の検出は次のようにして行われる。すなわち、液量測定部によってタンク内の液体現像剤の液量に基づいて回収経路を流れる回収液の流量を算出し、算出した回収液の流量を用いて回収経路に生じる回収液の滞留を検出している。そして、回収液滞留検出部が回収液の滞留を検出しないときは、タンクに貯留される液体現像剤の濃度が第１のトナー濃度に調整されるとともにタンクの液体現像剤の液量が制御される。また、回収液滞留検出部が回収液の滞留を検出したときは、タンクに貯留される液体現像剤の濃度調整が停止されるとともにタンクの液体現像剤の液量制御が停止される。 In order to solve the above-described problem, in the image forming apparatus and the image forming method according to the present invention, the concentration of the liquid developer containing the toner and the carrier liquid is adjusted to the first toner concentration in the tank , and the liquid developer The liquid volume is adjusted. During the printing operation, the liquid developer in the tank is supplied to the liquid developer storage part of the developing unit and stored in a certain amount, and flows out from the liquid developer storage part. Using the liquid developer stored in the liquid developer storage unit, the developer carrying member of the developing unit develops the latent image formed on the latent image carrying member, and an image is formed on the latent image carrying member. . The liquid developer remaining on the developer carrying member after development is removed. The liquid developer that has flowed out of the liquid developer reservoir and the recovered liquid that has recovered the liquid developer removed from the developer carrier are stored in the recovered liquid reservoir. The recovered liquid stored in the recovered liquid storage part moves through the recovery path and is stored in the tank . At this time, the stagnation of the recovered liquid generated in the recovery path is detected by the recovered liquid stagnation detection unit. Detection of the stagnation of the recovered liquid is performed as follows. That is, the flow rate of the recovered liquid flowing through the recovery path is calculated based on the liquid volume of the liquid developer in the tank by the liquid volume measuring unit, and the stagnation of the recovered liquid that occurs in the recovery path is detected using the calculated flow rate of the recovered liquid doing. When the collected liquid retention detection unit does not detect the retention of the collected liquid, the concentration of the liquid developer stored in the tank is adjusted to the first toner concentration and the amount of liquid developer in the tank is controlled. The Further, when the collected liquid retention detection unit detects the retention of the collected liquid, the concentration adjustment of the liquid developer stored in the tank is stopped and the liquid amount control of the liquid developer in the tank is stopped.
このように、回収経路に回収液の滞留が発生したときは、タンクの液体現像剤の濃度調整およびタンクの液体現像剤の液量制御が行われない。したがって、回収液の滞留によりタンクの液体現像剤の濃度や液量が大きく変化しても、タンクには前述の第１のトナー濃度より高い第２のトナー濃度の新たなトナーや新たなキャリアー液は供給されない。これにより、タンクに貯留される液体現像剤の液位は上昇しない。そして、この状態で回収経路内に滞留した回収液がその自重でタンクに落下して回収液の滞留が解消したとき、滞留していた分の回収液が短時間でタンク内に流れ込むため、タンク内の液位が上昇する。しかし、新たなトナーや新たなキャリアー液が供給されないことによりタンク内の液位が上昇していないので、このように回収液でタンク内の液位が上昇しても、タンク内の液位は大きく上昇しない。したがって、タンク内の液体現像剤がオーバーフローするのを防止することができる。これにより、タンク内の液体現像剤の液量を所定の範囲内に保持することが可能となる。また、液体現像剤のオーバーフローが防止されることから、液体現像剤の濃度を容易にかつ確実に調整することが可能となる。 Thus, when the stagnation of the recovered liquid occurs to the recovery path, the liquid amount control of the liquid developer concentration adjustment and tank of the liquid developer tank is not performed. Therefore, even if the concentration or amount of liquid developer in the tank changes greatly due to the retention of the collected liquid, the tank contains new toner or new carrier liquid having a second toner concentration higher than the first toner concentration. Is not supplied. Thereby, the liquid level of the liquid developer stored in the tank does not rise. When the recovered liquid accumulated in the recovery path this state residence of the recovering solution to fall in the tank has been eliminated by its own weight, since the recovery liquid of minutes had accumulated flows in a short time in the tank, the tank The liquid level inside rises. However, since the liquid level in the tank is not increased by the new toner and the new carrier liquid is not supplied, also in this way the liquid level in the tank at the recovery liquid is increased, the liquid level in the tank Does not rise significantly. Therefore, it is possible to prevent the liquid developer in the tank from overflowing. As a result, the amount of the liquid developer in the tank can be maintained within a predetermined range. Further, since the overflow of the liquid developer is prevented, the concentration of the liquid developer can be easily and reliably adjusted.
したがって、高粘度の液体現像剤を用いても、タンク内の液体現像剤の濃度を所定の第１のトナー濃度に保持するとともにタンク内の液体現像剤の液量を所定の範囲内に保持した状態で、連続印字動作を行うことができる。これにより、連続印字動作を途中停止させることなく、高画質での連続印字を安定的に行うことが可能となる。
Therefore, even when using a liquid developer of high viscosity, maintaining the amount of liquid developer in the tank holds the first toner concentration density of a given liquid developer in the tank within a predetermined range In this state, a continuous printing operation can be performed. This makes it possible to stably perform continuous printing with high image quality without stopping the continuous printing operation.
Claims (8)
トナー及びキャリアー液を含む液体現像剤を貯留する液体現像剤貯留部、液体現像剤で前記潜像担持体に形成された前記潜像を現像する現像剤担持体、及び前記潜像を現像した前記現像剤担持体をクリーニングする現像剤担持体クリーニング部材を有する現像部と、
貯留された液体現像剤の液量を測定する液量測定部を有するタンクと、
前記現像剤担持体クリーニング部材で回収された液体現像剤を貯留する回収液貯留部と、
前記回収液貯留部に貯留された液体現像剤を前記タンクに移動させる回収経路と、
前記液量測定部で測定された前記タンクの液体現像剤の液量に基づいて前記回収経路を移動する液体現像剤の滞留を検出する回収液滞留検出部と、
を備えることを特徴とする画像形成装置。 A latent image carrier on which a latent image is formed;
A liquid developer reservoir for storing a liquid developer containing toner and a carrier liquid, a developer carrier for developing the latent image formed on the latent image carrier with the liquid developer, and the developer for developing the latent image; A developing unit having a developer carrier cleaning member for cleaning the developer carrier;
A tank for organic liquid volume measurement unit for measuring the amount of liquid stored liquid developer,
A liquid collection unit that stores the liquid developer recovered by the developer carrier cleaning member,
A collecting path for moving the liquid developer stored in the liquid collection portion to the tank,
A recovered liquid retention detection unit that detects the retention of the liquid developer that moves in the recovery path based on the liquid amount of the liquid developer in the tank measured by the liquid amount measurement unit;
Image forming apparatus characterized by obtaining Bei a.
前記現像部の前記液体現像剤貯留部に供給する液体現像剤のトナー濃度を第１のトナー濃度に調整するとともに前記液体現像剤の液量を制御する制御部と、を備え、
前記制御部は、前記回収液滞留検出部が前記回収液の前記滞留を検出しないときは、前記タンクの液体現像剤のトナー濃度を調整するとともに前記タンクの液体現像剤の液量を制御し、前記回収液滞留検出部が前記回収経路を移動する液体現像剤の滞留を検出したときは、前記タンクの液体現像剤のトナー濃度の調整を停止するとともに前記タンクの液体現像剤の液量の制御を停止する請求項１に記載の画像形成装置。 A density measuring unit for measuring the toner density of the liquid developer in the tank;
A control unit that adjusts a toner concentration of the liquid developer supplied to the liquid developer storage unit of the developing unit to a first toner concentration and controls a liquid amount of the liquid developer;
The controller adjusts the toner concentration of the liquid developer in the tank and controls the liquid amount of the liquid developer in the tank when the collected liquid retention detector does not detect the retention of the recovered liquid; when said recovered liquid retention detecting unit detects the retention of the liquid developer to move the recovery path, control of the amount of the liquid developer of the tank stops the adjustment of the toner concentration of the liquid developer of the tank The image forming apparatus according to claim 1, wherein the operation is stopped.
前記第１のトナー濃度よりトナー濃度の高い第２のトナー濃度の液体現像剤を前記タンクに供給するトナー供給部と、
キャリアー液を前記タンクに供給するキャリアー液供給部と、を備え、
前記制御部は、前記濃度測定部で測定された液体現像剤のトナー濃度および前記液量測定部で測定された液体現像剤の液量に基づいて前記トナー供給部から供給される液体現像剤の供給量および前記キャリアー液供給部から供給されるキャリアー液の供給量を制御して前記タンクの前記液体現像剤のトナー濃度を調整するとともに前記タンクの前記液体現像剤の液量を制御する請求項１または２に記載の画像形成装置。 A liquid developer supply unit that supplies the liquid developer having the first toner concentration adjusted in the tank to the liquid developer storage unit;
A toner supply unit for supplying a liquid developer having a second toner concentration higher than the first toner concentration to the tank;
A carrier liquid supply unit for supplying a carrier liquid to the tank,
The control unit is configured to control the liquid developer supplied from the toner supply unit based on the toner concentration of the liquid developer measured by the density measurement unit and the liquid amount of the liquid developer measured by the liquid amount measurement unit. The control unit controls a supply amount and a supply amount of a carrier liquid supplied from the carrier liquid supply unit to adjust a toner concentration of the liquid developer in the tank and control a liquid amount of the liquid developer in the tank. The image forming apparatus according to 1 or 2.
前記液量測定部で測定された前記タンクの液体現像剤の液量に基づいて前記回収経路を移動する液体現像剤の流量を算出する流量演算部と、
前記流量演算部で算出された前記液体現像剤の流量と予め設定された閾値とを比較する比較器と、を有し、
前記比較器は、前記流量演算部で算出された液体現像剤の流量が前記閾値より大きいときは、前記液体現像剤の前記滞留が発生していないと判別し、前記流量演算部で算出された前記回収液の流量が前記閾値以下のとき、前記液体現像剤の前記滞留が発生していると判別する請求項１ないし３のいずれか１項に記載の画像形成装置。 The recovered liquid retention detector is
A flow rate calculation unit that calculates a flow rate of the liquid developer that moves in the recovery path based on the liquid amount of the liquid developer in the tank measured by the liquid amount measurement unit;
A comparator that compares the flow rate of the liquid developer calculated by the flow rate calculation unit with a preset threshold value;
The comparator determines that the stagnation of the liquid developer does not occur when the flow rate of the liquid developer calculated by the flow rate calculation unit is greater than the threshold, and is calculated by the flow rate calculation unit 4. The image forming apparatus according to claim 1 , wherein when the flow rate of the recovered liquid is equal to or less than the threshold value, it is determined that the stagnation of the liquid developer has occurred .
前記液体現像剤貯留部の前記液体現像剤を担持するとともに担持した前記液体現像剤を前記現像剤担持体に供給する液体現像剤供給部材と、
前記液体現像剤を前記現像剤担持体に供給した前記液体現像剤供給部材をクリーニングする液体現像剤供給部材クリーニング部材と、
を有する請求項４に記載の画像形成装置。 The developing unit is
A liquid developer supply member for carrying the liquid developer in the liquid developer reservoir and supplying the carried liquid developer to the developer carrier;
A liquid developer supply member cleaning member that cleans the liquid developer supply member that supplies the liquid developer to the developer carrier; and
The image forming apparatus according to claim 4, comprising:
前記潜像を現像した前記現像剤担持体をクリーニングして液体現像剤を回収し、
回収された液体現像剤を回収経路で移動させてタンクに貯留し、
前記タンクに貯留された液体現像剤の液量を測定し、
測定された液体現像剤の液量に基づいて前記回収経路を移動する液体現像剤の対流を判別し、
前記回収経路の液体現像剤が滞留していないと判別したときは、前記タンクの液体現像剤のトナー濃度を調整するとともに前記タンクの液体現像剤の液量を制御することを特徴とする画像形成方法。 The latent image is developed with a developer carrying member carrying a liquid developer containing toner and carrier liquid,
The developer carrying member that has developed the latent image is cleaned to recover the liquid developer,
Move the recovered liquid developer along the recovery path and store it in the tank.
Measure the amount of liquid developer stored in the tank,
Determining the convection of the liquid developer moving in the recovery path based on the measured liquid amount of the liquid developer;
When it is determined that the liquid developer in the collection path is not retained, the toner concentration of the liquid developer in the tank is adjusted and the liquid amount of the liquid developer in the tank is controlled. Method.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010253869A JP2012103598A (en) | 2010-11-12 | 2010-11-12 | Apparatus and method for forming image |
| US13/289,637 US20120121282A1 (en) | 2010-11-12 | 2011-11-04 | Image formation device and image formation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010253869A JP2012103598A (en) | 2010-11-12 | 2010-11-12 | Apparatus and method for forming image |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2012103598A JP2012103598A (en) | 2012-05-31 |
| JP2012103598A5 true JP2012103598A5 (en) | 2013-12-05 |
Family
ID=46047853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010253869A Withdrawn JP2012103598A (en) | 2010-11-12 | 2010-11-12 | Apparatus and method for forming image |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US20120121282A1 (en) |
| JP (1) | JP2012103598A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2675237B1 (en) * | 2011-02-10 | 2018-04-18 | Fujitsu Limited | Wireless communication system, receiving device, transmitting device and method of wireless communication |
| US8774661B2 (en) * | 2011-10-31 | 2014-07-08 | Hewlett-Packard Indigo, B.V. | Image forming system and methods thereof |
| JP6365132B2 (en) * | 2014-09-01 | 2018-08-01 | コニカミノルタ株式会社 | Wet development apparatus and wet image forming apparatus |
| JP2018059956A (en) * | 2016-09-30 | 2018-04-12 | キヤノン株式会社 | Image forming apparatus |
| US11119427B2 (en) | 2017-04-25 | 2021-09-14 | Hp Indigo B.V. | Flow structure for an ink supply in a liquid electrophotographic developer unit |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0185853U (en) * | 1987-11-30 | 1989-06-07 | ||
| JP3518460B2 (en) * | 2000-01-12 | 2004-04-12 | 富士ゼロックス株式会社 | Wet image forming apparatus and information processing system |
| JP2001201943A (en) * | 2000-01-17 | 2001-07-27 | Nec Niigata Ltd | Developer solution adjusting device for electrostatic and wet type electrophotographic printer |
| JP2003167442A (en) * | 2001-12-04 | 2003-06-13 | Pfu Ltd | Method for controlling toner recycling of electrophotographic device using liquid developer with high viscosity |
| US6615004B1 (en) * | 2002-05-06 | 2003-09-02 | Hewlett-Packard Development Company, L.P. | Supplying marking fluid in an imaging system |
| KR100611969B1 (en) * | 2003-12-12 | 2006-08-11 | 삼성전자주식회사 | Method for supplying and recovering developer of liquid electro-photographic image forming apparatus |
| JP2009075552A (en) * | 2007-08-24 | 2009-04-09 | Seiko Epson Corp | Developing device, developing method, and image forming apparatus |
| JP2009205077A (en) * | 2008-02-29 | 2009-09-10 | Brother Ind Ltd | Developer cartridge and image forming apparatus |
| JP2010107898A (en) * | 2008-10-31 | 2010-05-13 | Seiko Epson Corp | Developing device and image forming apparatus |
| JP2010204469A (en) * | 2009-03-04 | 2010-09-16 | Seiko Epson Corp | Image forming method and image forming apparatus |
-
2010
- 2010-11-12 JP JP2010253869A patent/JP2012103598A/en not_active Withdrawn
-
2011
- 2011-11-04 US US13/289,637 patent/US20120121282A1/en not_active Abandoned
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